If your boat is still not sit­ting cor­rect­ly, go over your boat trail­er from step 1, and see which part of your boat trail­er is not sit­ting cor­rect­ly with your boat. Just make note of how much … The width of our bunks adjust for boats 6’ to 8’6” wide. It would be inter­est­ing to learn more about how the rollers play a role in the trans­porta­tion of a boat.Over­time many boat own­ers in Amer­i­ca will come to the point that they will need to either replace their exist­ing boat trail­er bunks or repair their exist­ing bunk guides due to con­stant wear and tear. This would be a simple process of loosening the bow stop/ladder mount U-bolts and moving it back 2-3 inches and re-loading boat. This should fol­low the shape of your boats keel and allow for an eas­i­er launch when at the boat ramp.Once you are hap­py that your boats keel is rest­ing on your boat trail­ers keel rollers, it is time to make the adjust­ments to your Your boats bunks will vary by boat man­u­fac­ture as to were the trail­er bunk guides will be rest­ing. I found it inter­est­ing when you men­tioned that it is impor­tant to check the rollers on a boat trail­er reg­u­lar­ly to ensure safe­ty. Like your boat, your boat trailer's bunks--the padded, adjustable skids the boat sits on while on the trailer--will require occasional adjustment to carry your boat properly. In a similar way as you did with the rollers, unscrew each bolt with the adjustable screw and reposition the trailer bunks so that they touch the boat, taking particular care not to place your finger between the bunk and the boat. Most pontoon boats with 8’ wide decks usually have 72” bunk centers. If they are; Great! If you own car­pet bunk guides you will no doubt notice that they con­stant­ly need replac­ing much faster than plas­tic boat trail­er bunks. Plas­tic boat trail­er bunks on the oth­er hand for alu­mini­um boats last much longer and have a far greater life span and per­for­mance rat­ing. Adjust the bunks if your boat is setting on the keel, but is "tipsy" on the trailer. Loosen your Once you have fin­ished the first side of your boat you decid­ed to adjust, repeat the same process with the oppo­site side.When done cor­rect­ly, your boat should not be ‘tip­sy’ and should be rest­ing firm­ly on both boat trail­er bunks as well as your keel rollers. The nose cones on pontoons angle up like the bow of a canoe and cannot be supported. Pontoon boats with U shaped pontoons or shapes other than round will vary. Watch the boat coming up the trailer and make sure the bottom is clearing the frame and fenders and the bunks are positioned flat against the hull. It only takes a few minutes to measure and … Use your adjustable wrench to loosen the bolts that hold the bunk supports in place on the trailer.Raise the forward end of the bunk until it touches the bottom of the boat and tighten the forward-most bolt. Adjust your brack­ets as required, so that all Check the sta­bil­i­ty of your boat trail­er bunks after each time you launch and retrieve your boat. If this hap­pens, adjust them accord­ing­ly back to their orig­i­nal rest­ing posi­tion. If it is not, use your adjustable wrench to loosen the bolts that hold the keel roller in place. To retrieve your pontoon onto a bunk style pontoon trailer, back the trailer down the launch ramp getting the trailer as deep into the water as possible. Rarely do deal­ers put in any work to make sure the boat trail­er has been adjust­ed to suit the cus­tomers new boat. Repeat until the whole bunk touches the bottom of the boat and all the bolts on the bunk have been tightened.Will Charpentier is a writer who specializes in boating and maritime subjects. If the pontoon trailer isn’t adjusted perfectly to fit your pontoon, it’s easier to make the necessary adjustments before the boat is on the trailer. A trailer for a 20’ pontoon may have 15’-16’ bunks. Once placed correctly, retighten the screw. Starting at the front of the boat, raise the keel roller until it touches the bottom of the keel.